How do i refer to the $(this) element insidea $.post

I have this code

    $.post("recommend.php",{"jid":jid,"vid":vid,"eid":eid},function(data){
        if(data=="1")
            {
                $(this).text("Recommended");

            }
            else
                {
                    $(thelink).text("Recommend");
                }
    });

the post is executed properly but the text on the link is NOT changing thou开发者_如何学Gogh data is equal to 1. Any help...

this refers to the current context. In your AJAX callback it is different from the one of your calling function.

However, you can simply preserve it by using var $this = $(this); and then use $this inside the callback instead of $(this);

var $this = $(this);
$.post("recommend.php", {
    "jid": jid,
    "vid": vid,
    "eid": eid
}, function (data) {
    if (data == "1") {
        $this.text("Recommended");
    } else {
        $(thelink).text("Recommend");
    }
});

Of course another name would work, too. For example to preserve a plain this lots of people use self or that.

Another solution would be using $.ajax({ context: this, ...... })); to keep the same context inside the callback (if unspecified, this points to the options object passed to $.ajax())

Set it to a variable before calling $.post

var that = $(this);
$.post(..., function() {
    that.myFunction();
}

By default, this inside an AJAX callback is the jqXHR object for the request.

You should either cache the reference to the link (as you appear to have done with thelink) or use the context option to $.ajax:

$.ajax({
    url: "recommend.php",
    type: 'POST',
    data: {
        "jid": jid,
        "vid": vid,
        "eid": eid
    },
    context: this,
    success: function (data) {
        if (data == "1") {
            $(this).text("Recommended");

        } else {
            $(thelink).text("Recommend");
        }
    }
});

The context option sets the context for the callback functions -- i.e. it defines this within them. By setting it to the outer value of this (the reference to the link), you can access the link with $(this) within the callback.